Februaky 14, 1919] 



SCIENCE 



173 



Geotectonic adaptation through retardation of the 

 earth's rotation: Chakles R. Keyes. (Bead by 

 Utle.) 



Late Mississippian orogenic movements in North 

 America: Francis M. Van Tuyl and Raymond 

 C. Moore. (Read by title.) 



Post-glacial uplift of the New England coastal re- 

 gion: Herman L. Fairchild. (Bead by title.) 



Topographic features of the Hudson Valley and 

 the question of post-glacial marine waters in the 

 Hudson-Champlain Valley: James H. Stoller. 



Subterranean ' ' chalk-streams ' ' of northern France : 

 Edward Moore Burwash. (Read by title.) 



The relative efficiency of normative and modal 

 classifications of igneous rocks: Edward B. 

 Mathews. 



Pegmatite, silerite and aplite dikes of northern 

 New York: William J. Miller. 



Magnetic iron ore deposits of Clinton County, 

 New ¥ork: William J. Miller. 



High grade clays of the United States: H. Ries. 



Occurrence and origin of white clays at Saylors- 

 burg, Monroe County, Pa.: F. B. Peck. (Read 

 by title.) 



Oil geology in relation to valuation: Ralph Ar- 

 nold. (Read by title.) 



Sock products and the war: G. F. Loughlin. 



Manganese ore as a war mineral: T>. F. Hewett. 



World view of mineral wealth: Joseph B. 

 Umpleby. 



Internationalization of mineral resources: C. K. 

 Leith. 



Commercial control of the mineral resources of the 

 uxrrld: Josiah E. Spurr. 



The ecoTwmic limits to domestic independence in 

 minerals: George O. Smith. 



Imperial Mineral Resources Bureau, London, Eng- 

 land: WiLLET G. Miller. (Read by title.) 



Some problems of international readjustment of 

 mineral supplies as indicated in recent foreign 

 literature: Eleanora F. Bliss. (Introduced by 

 C. K. Leith.) 



War time development of the optical industry: F. 

 E. Wright. 



Geologic and present climates: Marsden Manson. 

 (Introduced by E. O. Hovey.) (Read by title.) 



Conditions of deposition of some Tertiary petro- 

 liferous sediments: Amadeus W. Grabau. (Read 

 by title.) 



Phosphate rock an economic army: R. W. Stone. 



Prevailing stratigraphic relationships of the bedded 

 phosphate deposits of Europe, North Africa and 

 North America: Amadeus W. Grabau. (Read 

 by title.) 



Principles in the determination of boundaries: A. 



P. Brioham. 

 Geographic descriptions of army cantonments and 

 of United States boundary regions: M. E. 

 Campbell. (Read by title.) 

 The Signal Corps school of meteorology : Oliver L. 



Fassig. (Introduced by N. M. Fenneman.) 

 The American topographer in the role of artillery 



orientation officer: F. E. Matthes. 

 A method of aerial topographic mapping: Fred H. 



MorFiT. 

 Mexican petroleum and the war: E. W. Shaw. 



(Read by title.) 

 American mapping in France: Glenn S. Smith. 

 Military snapping — o plane table: Alan Bateman. 



(Read by title.) 

 The sand chrome deposits of Maryland: Joseph 



T. Singewald, Jr. 

 The Cartersville potash slates, their economic re- 

 lation to chemical and industrial post-war de- 

 velopment: T. Poole Maynard. (Read by 

 title.) 

 Tlie anticlinal theory as applied to some quick- 

 silver deposits: Johan A. TTdden. 

 Crystalline graphite deposits of Alabama: Wil- 

 liam F. Prouty. (Read by title.) 

 Evidence as to the age of the semi-crystalline and 

 crystalline rocks: William F. Prouty. (Read 

 by title.) 

 Contributions to the origin of dolomite: W. A. 



Tarr. (Read by title.) 

 The magnesite industry: R. W. Stone. 



Although the number in attendance at the meet- 

 ing of the society was not as great as at some of 

 the eastern meetings there were about one hun- 

 dred and twenty-five members and guests registered. 

 The papers presented were interesting and valu- 

 able, and the days were crowded with events. 



Luncheon was secured each day, together with 

 the American Association for the Advancement of 

 Science and other affiliated societies, in the Ma- 

 chinery Hall of the university. 



Friday evening was occupied with the subscrip- 

 tion smoker at which was held a round table dis- 

 cussion, presided over by Professor Bailey Willis, 

 on "Cooperation in Geological Instruction" led 

 by Professor Herbert E. Gregory and participated 

 in by Professors George F. Kay, Charles P. Ber- 

 key, J. C. Merriam and William M. Davis. 



The annual dinner of the society held jointly 

 with the Paleontological Society and the Associa- 

 tion of American Geographers was held, under the 

 chairmanship of President Whitman Cross, at the 

 Southern Hotel on the evening of Saturday. Ad- 



